CN104692720A - Copper tailing baking-free brick and preparation method thereof - Google Patents
Copper tailing baking-free brick and preparation method thereof Download PDFInfo
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- CN104692720A CN104692720A CN201510054902.8A CN201510054902A CN104692720A CN 104692720 A CN104692720 A CN 104692720A CN 201510054902 A CN201510054902 A CN 201510054902A CN 104692720 A CN104692720 A CN 104692720A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention belongs to the fields of special building material preparation and industrial solid waste comprehensive utilization and particularly relates to a copper tailing baking-free brick and a preparation method thereof. The copper tailing baking-free brick comprises the following components by weight percent: 55-80% of copper tailing micro powder, 8-15% of cement, 7-20% of aggregate, 0.1-0.5% of additive and 4.9-9.5% of water. The preparation method comprises the steps of performing dry mixing, wet mixing, compression moulding, natural curing or autoclaved curing. By adopting the copper tailing micro powder, the copper tailing baking-free brick is simple in preparation process and low in generation cost. The obtained copper tailing baking-free brick is good in sound insulation effect and thermal insulation heat retaining property, strong in durability, low in water absorption and high in compressive strength and rupture strength, and various performances all meet the national architectural material industry standard.
Description
Technical field
The invention belongs to extraordinary building materials preparation field and industrial solid castoff field of comprehensive utilization, it is non-burning brick and preparation method thereof to be specifically related to a kind of copper tailing.
Background technology.
Ore mine tailing be ore through ore grinding ore dressing, valuable mineral is selected the waste of rear discharge.China's mine tailing contains multiple gangue mineral, the feature that the amount of having is large, particle is tiny, kind is many, is the chief component of industrial solid castoff.Along with the fast development of mining industry, a large amount of exploitations of Mineral resources must cause a large amount of discharges of mine tailing.A large amount of discharges of mine tailing not only take wide land resources, and the living environment of the environmental pollution serious threat mankind that causes of mine tailing and orthobiosis, even destroy ecosystem balance, have now been subject to the extensive concern of the whole society.
At present, the direction of domestic and international resource of tailings comprehensive utilization mainly concentrates on the recovery of valuable element, Mine filling material and material of construction three aspects, the correlative study preparing energy saving building material about resource of tailings is more, its can produce silicate cement, development and production body of wall material, produce devitrified glass, development and production pottery and purify minerals product application in material, make refractory materials etc., and obtain a series of achievement.
China's copper ore resource develops with a long history, and copper tailing is with its huge quantity and scale, and copper tailing is as the important component part of non-ferro metals debris, more representative in mine tailing field.China's copper tailing resource distribution region is extensive, and the average grade of the copper in copper mining tailing is estimated to be not less than 0.077%.In copper tailing resource, the complicated occurrence state of copper disseminated grain size that is various, copper liberation degree that is thin, copper is low, and silt content is large in copper tailing, these features affect copper tailing recovery utilization rate, strengthen copper tailing and recycle difficulty, the progress of the effective comprehensive utilization technique of restriction copper tailing.According to China's copper tailing set of resources content and essential characteristic thereof, the main Land use systems of current China copper tailing be mine tailing return choosing extract valuable constituent, mining fill and for the preparation of aspects such as material of construction, wherein mine tailing filling mine worked-out section accounts for 53% of Tailings utilization total amount, mine tailing is prepared 43%, mine tailing Hui Xuan and the extraction valuable constituent that material of construction accounts for Tailings utilization total amount and is accounted for 3% of Tailings utilization total amount.According to the current utilization ways of copper tailing and proportion analysis, it is not high to there is comprehensive utilization ratio in China's copper tailing utilization, utilizes the degree of depth low, the problems such as Land use systems is single.
Copper tailing, through suitably process, can be used as a kind of well minery packing material, is a kind of approach effectively directly utilizing copper tailing.Carrying out suitability land reclamation with filling in copper tailing storehouse or at copper tailing, is also a kind of effective way directly utilizing copper tailing.But utilize copper tailing to carry out mining area backfill and also there are problems with reclaiming, as affected the soil regime of fill area and Reclaimed Land, vegetation growth situation and ecotope.
Copper tailing, as secondary resource, is carrying out on the basis of comprehensive physico-chemical analysis to copper tailing, select the copper tailing of value to select process more again to having, and extracts valuable constituent wherein.Realize copper tailing second stage employ, save natural resources, reduce mine tailing and pile up.If but mine tailing waste residue is not processed further, just carry out mine tailing gravity treatment simply and valuable metal extracts, rob Peter to pay Paul beyond doubt, cause secondary environmental pollution.Utilize copper tailing can prepare the material of construction such as material of mine tailing cement, finishing material, body of wall, be applied in construction work and foundation works, this is also the main utilization ways of one of copper tailing.Although at present about utilize copper tailing to prepare the research of material of construction and achievement a lot, but mostly exist and make a low multiple use, utilize the problems such as depth as shallow, Land use systems are single, really can realize copper tailing high additive, high added value, Deep comprehensive utilization processing mode are few in number.
Increasingly sharpen with environmental stress along with copper tailing quantity discharged continues to increase, high added value, Deep comprehensive utilization processing mode efficient in the urgent need to one, really turns waste into wealth, thoroughly solves copper tailing and pile up problem.This efficient, high added value, deep-cycle comprehensive utilization of resources mode research is applied, and contributes to improving comprehensive utilization of tailing level, saves natural resources, be conducive to protection and improve the ecological environment, having important social benefit and environmental benefit.Higher containing copper grade in China's copper tailing resource, but the complicated occurrence state of copper is various, the disseminated grain size of copper thin, the liberation degree of copper is low, and also in copper tailing, silt content is large, mainly based on copper oxide mineral and aluminosilicate.China's copper tailing set of resources content and essential characteristic thereof, make it as a kind of starting material for building trade, can prepare satisfactory material of construction, for it provides basis of reality for the preparation of non-burning brick.
Summary of the invention
The problems such as the intensity that the copper tailing volume of the non-burning brick existence of copper tailing is lower, non-burning brick in prior art is not high in order to solve, poor durability, the invention provides and a kind ofly the copper tailing of copper tailing high additive, high reactivity, high added value can be made non-burning brick and preparation method thereof.
A kind of copper tailing is non-burning brick, comprises each component of following weight percentage: the copper tailing micro mist of 55 ~ 80%, the cement of 8 ~ 15%, the aggregate of 7 ~ 20%, the admixture of 0.1 ~ 0.5%, the water of 4.9 ~ 9.5%.
Preferably, described copper tailing micro mist is: specific surface area is 420 ~ 450m
2in/kg, powder, particle diameter is the copper tailing modified powder that the granule content of 5 ~ 30 μm reaches more than 65%.
The copper tailing micro mist of above character is by existing technology, copper tailing material particles characteristic and surface energy, mechanical energy and chemical energy Optimized Matching is utilized to circulate the general character grinding technology that successively decreases, at copper tailing after spoil reclaming with extraction valuable metal, by optimizing grain composition, particle shaping, activation modification and relatively little tap density control techniques, the high reactivity copper tailing micro mist be prepared from.Its main component is silicon-dioxide, calcium oxide, aluminum oxide and magnesium oxide etc.After copper tailing is extracted by spoil reclaming and valuable metal, the valuable metal-gold and silver in copper tailing, copper, iron obtain enrichment and extraction; Copper tailing micro mist powder specific-surface area detection reaches 420 ~ 450m
2/ kg, in powder, 5 ~ 30 μm of particle size content reach more than 65%, have good grain composition, effectively improve the activity of copper tailing micro mist, can high additive, high reactivity, high added value must be non-burning brick for the preparation of copper tailing.
Cement, can be selected from ordinary Portland cement, as: P.O 42.5R ordinary Portland cement.It obtains by commercially available mode, such as: Huaxin Concrete Co., Ltd 42.5R ordinary Portland cement, rotary kiln cement company limited 42.5 of Zaozhuang Golden Bridge of Quan Tou group ordinary Portland cement, etc.
Preferably, described aggregate is selected from any one or the multiple mixing in river sand, rubble, slag, slag.
Preferably, described admixture comprises water reducer and alkali-activator.
Water reducer can be selected from lignin water reducer, naphthalene series high-efficiency water-reducing agent, polycarboxylate high performance water-reducing agent.Be preferably polycarboxylate high performance water-reducing agent, obtain by commercially available mode.
Alkali-activator is mixed by any proportioning by one or more in commercially available industrial chemicals water glass, sodium carbonate, potassium hydroxide, sodium hydroxide.
Present invention also offers the preparation method that a kind of copper tailing is non-burning brick, comprise the steps:
With weight, the copper tailing micro mist of 55 ~ 80%, the cement of 8 ~ 15% and the aggregate of 7 ~ 20% are dry mixed, the water adding 4.9 ~ 9.5% again carries out wet mixing, add the admixture of 0.1 ~ 0.5% again, carry out pressure forming again, carry out natural curing or steam press maintenance again, obtain copper tailing non-burning brick.
Copper tailing micro mist makes that the non-burning brick preparation technology of copper tailing is simple, manufacturing cost is low.The non-burning brick soundproof effect obtained and heat preservation and insulation good, and weather resistance is strong, water-intake rate is lower, ultimate compression strength and folding strength higher, properties reaches national building material industry standard requirement.Non-burning brick for copper tailing of the present invention preparation method and technique, copper tailing being selected connects with copper tailing resource methods of disposal such as techniques with valuable metal extraction process, copper tailing gas concrete preparation method again coordinates; can be formed a kind of novel, green, circulation the efficient joint disposal of copper tailing and Deep Land use systems; realize that copper tailing is efficient, high added value, comprehensive utilization of resources; thorough solution copper tailing piles up problem and harm, saves resources and energy, protection of the environment.
Compared with prior art, the present invention has the following advantages:
1. the inventive method technique is simple, and cost is low, adapts to large-scale industrial production;
2. copper tailing micro mist powder granule specific surface area of the present invention is at 420 ~ 450m2/kg, and in powder, 5 ~ 30 μm of particle size content reach more than 65%, have good grain composition;
3. copper tailing micro mist of the present invention effectively improves the activity of copper tailing micro mist, can high additive, high reactivity, high added value non-burning brick for the preparation of copper tailing;
4. the non-burning brick soundproof effect of copper tailing of the present invention and heat preservation and insulation good, its weather resistance is strong, water-intake rate is lower, ultimate compression strength and folding strength higher, non-burning brick properties reaches national building material industry standard requirement;
5. the non-burning brick preparation method of copper tailing of the present invention and technique, copper tailing select to connect with copper tailing resource methods of disposal such as techniques with valuable metal extraction process, copper tailing gas concrete preparation method again and coordinate; can be formed a kind of novel, green, circulation the efficient joint disposal of copper tailing and Deep Land use systems; realize that copper tailing is efficient, high added value, comprehensive utilization of resources; thorough solution copper tailing piles up problem and harm, saves resources and energy, protection of the environment.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
The inventive method is with Jiangxi copper tailing for main raw material, and through experiment grinding machine grinding, standard square hole screen screening, obtained one has Gao Bibiao, good grain composition, highly active copper tailing micro mist.By copper tailing again micro mist, cement and aggregate be dry mixed, then add a certain amount of water and carry out wet mixing, add appropriate admixture, obtain copper tailing by pressure forming, natural curing or steam press maintenance non-burning brick.
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
Prepare copper tailing non-burning brick, copper tailing micro mist, cement and aggregate is the steps include: to be dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), that natural curing obtains copper tailing is non-burning brick, wherein copper tailing micro mist accounts for raw material quality per-cent 55%, cement accounts for raw material quality per-cent 15%, aggregate accounts for raw material quality per-cent 20%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) accounts for raw material quality per-cent 0.1%, and surplus is water.
Embodiment 2
Prepare copper tailing non-burning brick, copper tailing micro mist, cement and aggregate is the steps include: to be dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), that steam press maintenance obtains copper tailing is non-burning brick, wherein copper tailing micro mist accounts for raw material quality per-cent 60%, cement accounts for raw material quality per-cent 13%, aggregate accounts for raw material quality per-cent 17%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) accounts for raw material quality per-cent 0.2%, and surplus is water.
Embodiment 3
Prepare copper tailing non-burning brick, the copper tailing micro mist of preparation in 1, cement and aggregate is the steps include: to be dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), that steam press maintenance obtains copper tailing is non-burning brick, wherein copper tailing micro mist accounts for raw material quality per-cent 65%, cement accounts for raw material quality per-cent 12%, aggregate accounts for raw material quality per-cent 15%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) accounts for raw material quality per-cent 0.1%, and surplus for Whom.
Embodiment 4
Prepare copper tailing non-burning brick, copper tailing micro mist, cement and aggregate is the steps include: to be dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), that natural curing obtains copper tailing is non-burning brick, wherein copper tailing micro mist accounts for raw material quality per-cent 70%, cement accounts for raw material quality per-cent 10%, aggregate accounts for raw material quality per-cent 15%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) accounts for raw material quality per-cent 0.2%, and surplus is water.
Embodiment 5
Prepare copper tailing non-burning brick, copper tailing micro mist, cement and aggregate is the steps include: to be dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), that natural curing obtains copper tailing is non-burning brick, wherein copper tailing micro mist accounts for raw material quality per-cent 75%, cement accounts for raw material quality per-cent 10%, aggregate accounts for raw material quality per-cent 10%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) accounts for raw material quality per-cent 0.1%, and surplus is water.
Embodiment 6
Prepare copper tailing non-burning brick, the steps include: copper tailing micro mist, cement and aggregate is dry mixed, add a certain amount of water again and carry out wet mixing, add appropriate admixture, by pressure forming (forming pressure is 15MPa), it is non-burning brick that steam press maintenance obtains copper tailing, wherein copper tailing micro mist accounts for raw material quality per-cent 80%, cement accounts for raw material quality per-cent 8%, aggregate accounts for raw material quality per-cent 7%, admixture (polycarboxylate high performance water-reducing agent, alkali-activator) account for raw material quality per-cent 0.2%, water consumption accounts for raw material quality per-cent 5%.
According to national standard
gBT2542-2012" Test methods for wall bricks " related detecting method, carries out performance test to copper tailing provided by the present invention is non-burning brick.Obtain non-burning brick is adjusted in the scope of composition provided by the present invention and component, ultimate compression strength is 10 ~ 23MPa, folding strength is 2.5 ~ 4.3MPa, institute's making burn-free bricks sample meets the standard of MU 10, MU15, MU20 grade, wherein the non-burning brick average intensity of MU10 grade is 12M Pa, the non-burning brick average intensity of MU15 grade is that the non-burning brick average intensity of 16M Pa, MU20 grade is at more than 20M Pa.
The performance variation that copper tailing is non-burning brick and copper tailing powder content have certain relation, and non-burning brick intensity powder content increases in rear downtrending of first rising; Under other identical conditions, copper tailing micro mist powder specific-surface area detection and size distribution directly affect the non-burning brick performance of copper tailing, the powder specific-surface area detection of copper tailing micro mist is higher, less than 32 μm powder contents are more, copper tailing micro mist lateral reactivity is higher, and the non-burning brick intensity of copper tailing of preparation is higher.
The foregoing is only better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a copper tailing is non-burning brick, it is characterized in that, comprises each component of following weight percentage: the copper tailing micro mist of 55 ~ 80%, the cement of 8 ~ 15%, the aggregate of 7 ~ 20%, the admixture of 0.1 ~ 0.5%, the water of 4.9 ~ 9.5%.
2. copper tailing according to claim 1 is non-burning brick, it is characterized in that, described copper tailing micro mist is: specific surface area is 420 ~ 450m
2in/kg, powder, particle diameter is the copper tailing modified powder that the granule content of 5 ~ 30 μm reaches more than 65%.
3. copper tailing according to claim 1 and 2 is non-burning brick, it is characterized in that: described aggregate is selected from any one or multiple mixing in river sand, rubble, slag, slag.
4. copper tailing according to claim 1 and 2 is non-burning brick, it is characterized in that: described admixture comprises water reducer and alkali-activator.
5. the preparation method that copper tailing is non-burning brick, is characterized in that, comprises the steps:
With weight, the copper tailing micro mist of 55 ~ 80%, the cement of 8 ~ 15% and the aggregate of 7 ~ 20% are dry mixed, the water adding 4.9 ~ 9.5% again carries out wet mixing, add the admixture of 0.1 ~ 0.5% again, carry out pressure forming again, carry out natural curing or steam press maintenance again, obtain copper tailing non-burning brick.
6. the preparation method that copper tailing according to claim 5 is non-burning brick, is characterized in that, described copper tailing micro mist is: specific surface area is 420 ~ 450m
2in/kg, powder, particle diameter is the copper tailing modified powder that the granule content of 5 ~ 30 μm reaches more than 65%.
7. the preparation method that the copper tailing according to claim 5 or 6 is non-burning brick, is characterized in that: described aggregate is selected from any one or multiple mixing in river sand, rubble, slag, slag.
8. the preparation method that the copper tailing according to claim 5 or 6 is non-burning brick, is characterized in that: described admixture comprises water reducer and alkali-activator.
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| CN105236933A (en) * | 2015-11-02 | 2016-01-13 | 景德镇陶瓷学院 | Geopolymer chemically-bonded ceramic tile and preparation method thereof |
| CN106830801A (en) * | 2017-02-18 | 2017-06-13 | 滨州盛华建材有限公司 | A kind of preparation method of high intensity split tile and its application in composite thermal-insulating wall |
| CN107759244A (en) * | 2017-11-20 | 2018-03-06 | 武汉科技大学 | A kind of mine tailing light-weight insulating brick and preparation method thereof |
| CN108840633A (en) * | 2018-08-21 | 2018-11-20 | 云南中洲海绵城市建材有限公司 | One kind is exempted to paint ecological block brick and its production technology |
| CN110240445A (en) * | 2019-06-14 | 2019-09-17 | 东南大学 | A kind of non-fired tailings brick and preparation method thereof |
| CN111807765A (en) * | 2020-06-15 | 2020-10-23 | 安徽马钢矿业资源集团建材科技有限公司 | Mine tailing brick for road and preparation method thereof |
| CN111847950A (en) * | 2020-07-31 | 2020-10-30 | 江西省建筑材料工业科学研究设计院 | High-siliceous desulfurized copper tailing micro powder, preparation thereof and application thereof in PHC pipe pile production |
| CN113121132A (en) * | 2021-05-06 | 2021-07-16 | 昆明理工大学 | Alkali-activated tailing-based composite cementing material and preparation method thereof |
| CN115213998A (en) * | 2022-08-26 | 2022-10-21 | 昆明理工大学 | Method for preparing in-situ ecological grass planting bricks by using copper mine tailings |
| CN116375441A (en) * | 2023-06-05 | 2023-07-04 | 矿冶科技集团有限公司 | Method for preparing decoration integrated autoclaved aerated concrete block by grading copper tailings and autoclaved aerated concrete block |
| CN117069421A (en) * | 2023-06-09 | 2023-11-17 | 中铝郑州有色金属研究院有限公司 | Baking-free brick and preparation method thereof |
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| CN105236933B (en) * | 2015-11-02 | 2018-03-06 | 景德镇陶瓷大学 | A kind of geo-polymer chemically bonded ceramics Wall or floor tile and preparation method thereof |
| CN106830801A (en) * | 2017-02-18 | 2017-06-13 | 滨州盛华建材有限公司 | A kind of preparation method of high intensity split tile and its application in composite thermal-insulating wall |
| CN106830801B (en) * | 2017-02-18 | 2019-09-06 | 滨州盛华建材有限公司 | It is a kind of high intensity split tile preparation method and its application in composite thermal-insulating wall |
| CN107759244A (en) * | 2017-11-20 | 2018-03-06 | 武汉科技大学 | A kind of mine tailing light-weight insulating brick and preparation method thereof |
| CN108840633A (en) * | 2018-08-21 | 2018-11-20 | 云南中洲海绵城市建材有限公司 | One kind is exempted to paint ecological block brick and its production technology |
| CN110240445A (en) * | 2019-06-14 | 2019-09-17 | 东南大学 | A kind of non-fired tailings brick and preparation method thereof |
| CN111807765A (en) * | 2020-06-15 | 2020-10-23 | 安徽马钢矿业资源集团建材科技有限公司 | Mine tailing brick for road and preparation method thereof |
| CN111847950A (en) * | 2020-07-31 | 2020-10-30 | 江西省建筑材料工业科学研究设计院 | High-siliceous desulfurized copper tailing micro powder, preparation thereof and application thereof in PHC pipe pile production |
| CN113121132A (en) * | 2021-05-06 | 2021-07-16 | 昆明理工大学 | Alkali-activated tailing-based composite cementing material and preparation method thereof |
| CN115213998A (en) * | 2022-08-26 | 2022-10-21 | 昆明理工大学 | Method for preparing in-situ ecological grass planting bricks by using copper mine tailings |
| CN116375441A (en) * | 2023-06-05 | 2023-07-04 | 矿冶科技集团有限公司 | Method for preparing decoration integrated autoclaved aerated concrete block by grading copper tailings and autoclaved aerated concrete block |
| CN116375441B (en) * | 2023-06-05 | 2023-08-08 | 矿冶科技集团有限公司 | Method for preparing decoration integrated autoclaved aerated concrete block by grading copper tailings and autoclaved aerated concrete block |
| CN117069421A (en) * | 2023-06-09 | 2023-11-17 | 中铝郑州有色金属研究院有限公司 | Baking-free brick and preparation method thereof |
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| CN104692720B (en) | 2017-03-15 |
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